Solvent recovery

Details Solvent recovery Solvent recovery

1983-03-07

1985-11-19

Bashore, S. Leon

Distillation: processes, separatory

Filming of distilland for vaporization

203 91, 202185R, 202205, 202236, 159 49, 159 61, 159DIG40, 208 45, 208321, B01D 310, B01D 312, C10G 2128

Patent

active

045540551

ABSTRACT:
Method and apparatus for recovering a solvent from a mixture containing the solvent is disclosed. In certain aspects, a portion of the recovered liquid is recycled and used in the evaporative process, such as for the seal liquid in a liquid ring vacuum pump. In another aspect, the initial separation is achieved in a thin film evaporator operating under partial vacuum from the liquid ring vacuum pump.

REFERENCES:
patent: 3130108 (1964-04-01), Eckstrom
patent: 3278415 (1966-10-01), Doberenz et al.
patent: 3357479 (1967-12-01), Baird et al.
patent: 3678983 (1972-07-01), Widmer et al.
patent: 4273644 (1981-06-01), Harris et al.
patent: 4301298 (1981-11-01), Horlenko et al.
Luwa Bulletin, EV-24, pp. 8 & 9, Luwa Corp., Charlotte, N.C.
Emmerling, Apr. 1975, Chemical Processing.
Hukill, Jr. et al., Jan. 1971, Chemical Processing.
Booth, III et al., Jan. 1983, Chemical Processing, pp. 34-35.
Nash Vacuum Pumps and Compressors, Bulletin No. 417-A, 1966, pp. 1-12, esp. p. 5.
J. H. Perry, Chemical Engineer's Handbook, pp. 6-24, 1963, McGraw-Hill, N.Y.

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